400466644 has 12 divisors (see below), whose sum is σ = 704487168. Its totient is φ = 199184600.

The previous prime is 400466641. The next prime is 400466669. The reversal of 400466644 is 446664004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400466641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261322 + ... + 262849.

It is an arithmetic number, because the mean of its divisors is an integer number (58707264).

Almost surely, 2^400466644 is an apocalyptic number.

It is an amenable number.

400466644 is a deficient number, since it is larger than the sum of its proper divisors (304020524).

400466644 is a wasteful number, since it uses less digits than its factorization.

400466644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524366 (or 524364 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 400466644 is about 20011.6626995360. The cubic root of 400466644 is about 737.0927102463.

The spelling of 400466644 in words is "four hundred million, four hundred sixty-six thousand, six hundred forty-four".